Well, you're going to have to upgrade. It's highly unlikely that you will be able to learn to fly on a plane (successfully) that will keep you happy forever.
Look here http://www.rcuniverse.com/forum/m_4537845/tm.htm for a list of training aircraft. You're already into models so you should know of the various mail order and lhs facilities. FIND a local club or at least an experienced pilot/instructor to teach you how to fly.